Or, it may have been like how orchestral directors are completely motivated to recruit the best musicians. And, they will strongly tell you and themselves that gender, ethnicity, etc... are irrelevant. All that matters is how well you play. And yet, somehow if the people selecting the recruits are cut off from information that let's them determine the gender of the recruits, suddenly female musicians are selected at a much higher rate by the same directors!

I would be amazed if 1925 Harvard physically cut of their recruiters from knowing which students were Jewish.